Substituting commonly used foods containing saturated fats with foods containing polyunsaturated fats significantly reduces cholesterol levels and heart disease risk after only two months, according to a Norwegian study. The clinical trial involved 115 people who had moderately high cholesterol levels who were randomly assigned to either a polyunsaturated fat diet group or a high-saturated fat group. For the polyunsaturated diet group, common foods such as spread for bread, cooking fats, cheese, bread and cereals contained only polyunsaturated fats. After eight weeks, total cholesterol dropped in this group by nine percent, and LDL (“bad”) cholesterol dropped 11 percent. These changes correspond to a 27 percent reduction in the risk of heart disease.